JasperReports Server is a powerful, yet flexible and lightweight reporting server. Generate, organize, secure, and deliver interactive reports and dashboards to users with a web based BI Platform. Available as an open source community edition download as well as a commercially licensed, enterprise-grade business intelligence solution.

RapidAnalytics is the 1st open source server for data mining and business analytics. It is based on the world-leading data mining solution RapidMiner and includes ETL, data mining, reporting, dashboards in a single server solution.

Egonet is a program for the collection and analysis of egocentric network data. It helps you create the questionnaire, collect data, and provide general global network measures and data matrixes that can be used for further analysis by other software.

Tudu Lists is a J2EE application for managing todo lists. It's based on Spring 2.5, JPA/Hibernate and AJAX (using the DWR framework). It's a simple yet effective project management tool, and it is also often used as a sample Spring application.

MeshCMS is a CMS (Content Management System) designed to be easy to use. It is file based and doesn't require a database. MeshCMS has been written in Java and requires a servlet container compatible with Servlet 2.3 and JSP 1.2 (e.g. Tomcat 4).

jspVote is the system for organising online survey polls with easy web interface.
A fully customizable survey poll system based on java and jsp which stores
any number of polls into a database. Supports single and multiple voting options.

Columns Plug-in for Eclipse defines the concept of 'column' and some functions of this editable component. Functions such as copy, paste, cut, fill, lowercase, uppercase, search and replace, columns history and others are provided.

jwaBlogger is social links/blogging software, that can easily be added to your website. jwaBlogger provides full HTML support, RSS and Atom feeds, a most popular blog entry history, and more. Example at: http://www.jwablogger.org.